Not sure this goes here, but I guess it is a problem with a gui applicaiton.

I am trying to burn an optical disc with k3b, and the dialog box keeps telling me "Please insert an empty DVD or Blu-ray medium." When I put the medium in, I get the notification from kde (and the device notifier shows "blank DVD+R." Even k3b itself (in the upper left corner next to the filesystem tree) says "Empty DVD+R Medium" (and right below that, the model of the optical drive), and if I click on it, I get: